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Finding the Fourth Proportional to 724,355.04, 999,608.24 and 402,069

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Solution

The fourth proportional to 724,355.04, 999,608.24 and 402,069 is: 554,854.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,355.04 : 999,608.24 = 402,069 : x
  2. Step 2: Convert to fraction form
    724,355.04/999,608.24 = 402,069/x
  3. Step 3: Cross multiply
    724,355.04x = 999,608.24 × 402,069
  4. Step 4: Simplify right side
    724,355.04x = 401,911,485,448.56
  5. Step 5: Solve for x
    x = 401,911,485,448.56/724,355.04
  6. Step 6: Final answer
    x = 554,854.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.